Improvement in spade-plows



' D. RUSSELL Steam Flow. A N 12,466. I Patented Feb. 27, 1855.

Inventor:

AM. PHBTO-LIY HO. C0: ILY- (OSBORNE'S PROCESS.)

UNITED STATES ATENT OFFICE.

. DAVID RUSSELL, OF DREWERSBURG, INDIANA.

IMPRO'VEM ENT IN SPADIE-PLOWS.

Specification forming part of Letters Patent No. 12,466, dated February 27, 1855.

To all whom it may concern.-

Be it known that I, DAVID RUssELL, of Drewersburg, in the county of Franklin and State of Indiana, have invented a new and useful Machine for Spading; and I do hereby declare that thefollowing is afull, clear, and exact description of the same, reference'beiug had to the annexed drawings, making a part of this description, in ivhich- Figure 1 is a side'elevation in section, the plane of said section taken through the line w 00, Fig. 2. Fig. 2 is a plan view of the same.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

The nature of my invention consists in constructing a machine for the purpose of spadingup earth. The invention relates more particularly to the manner of hanging and operating the spades.

A A are bars, which are secured to the double crank a. a, formed on axle O at their upper ends. Bars A A are secured by means of four connecting-rods, b b b b, to a stationary crossbar, 0, said connecting-rods working freely on joints. The lower ends of bars A A are provided with cutters d d, which are set at a proper pitch to en able them to enter the surface easily.

Cis an axle, on which the cranks are formed. It is supported in bearings g g g.

D is a pulley, which is secured to axle G, and over which a chain-belt, h, passes, said belt also extending around pulley E, to which motion is communicated through any suitable arrangement of machinery.

When rotary motion is communicated to axle-O and cranks a a, said cranks, in combination with the connecting-rods b b b b, iin part a curved motion to the bars A A and cutters d d, which is peculiarly adapted to the operation of spading.

Spading up earth has long been deemed the most profitable manner of preparing itfor the reception of seed; but the difticulties attending the process of spading have heretofore been deemed so great that plowing has been almost universally substituted in its place. These difficulties have all been successfully overcome by this machine, as it spades with the same amount of power and in the same time about thirty per cent. more ground than the best plows, while it leaves the soil-in a much lighter condition.

I am aware that upoua revolving horizontal cylinder both movable and fixed spades have been arranged to dig up the soil. Therefore I do not claim such devices; but

What I claim as my invention, and desire to secure by a patent, is-

The cutter-bars A A, said bars being provided with cutters at theirlower ends, and operating in the manner and for the purpose described and set forth.

DAVID eUssELL. [L. s.] In presence of- SAML. GRUBB, J NO. H. J oHNsoN. 

